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Cos(2pi/28)cosec(3pi/28)+cos(6pi/28)cosec(9pi/28)+cos(18pi/28)cosec(27pi/28)=0
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Cos(2pi/28)cosec(3pi/28)+cos(6pi/28)cosec(9pi/28)+cos(18pi/28)cosec(27pi/28)=0

User Hans
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4 votes
Sorry, I cannot answer this as this is a question I don't understand. You are pretty High-Tech BTW.
User Nauraushaun
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8.4k points
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